* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none
}

html,
body {
    height: 100%;
}

ul li {
    list-style: none;
}

.menu-wrap {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 55px;
    background-color: #f5f5f5;
    box-shadow: 1px 0 15px rgba(0, 0, 0, 0.07);
    overflow: hidden;
}

.menu-wrap:hover {
    width: 250px;
}

.menu {
    position: absolute;
    left: 0;
    top: 80px;
    bottom: 80px;
    width: 250px;
    overflow-y: auto;
    margin-top:80px;
}

.menu li {
    height: 42px;
    line-height: 42px;

}

.menu li:hover {
    background-color: rgb(160, 190, 117);
}

.menu li:hover a {
    color: #fff;
}

.menu a {
    display: block;
    columns: #8a8a8a;
    border-top: 1px solid #e9e9e9;
}

.menu i {
    display: inline-block;
    width: 55px;
    text-align: center;
    font-size: 18px;
}

.menu span {
    font-size: 14px;
}

/* 侧边头像 */
#headPic {
    width: 80px;
    height: 80px;
    border: 1px solid #ccc;
    border-radius: 75px;
    margin-left: 80px;
    /* margin:20px auto; */
    position: relative;
    overflow: hidden;
    top: 50px;
}

#headPicimg {
    width: 80px;
    height: 80px;
}

#headPic:hover #mask {
    display: block;
}
#mask {
    width: 150px;
    height: 150px;
    background-color: rgba(0, 0, 0, 0.5);
    position: absolute;
    left: 0;
    top: 0;
    display: none;
}

#innerImg {
    position: absolute;
    left: 25%;
    top: 25%;
    transform: translate(-50%, -50%);
    /*适用于不清楚自己的尺寸情况*/
}
#main {
    width: 80%;
    /* background: red; */
    /* height: 1500px; */
    margin: auto;
    min-width: 1200px;
    position: absolute;
    left: 250px;
}
#main #essay{
    width: 80%;
    height: 100%;
}
#main #essay #inner{
    margin: 10px;
    float: left;
    width: 100%;
    height: 20%;
    border: 1px solid;
    /* background-color:rgb(198, 229, 153); */
}
#main #essay #inner #pic{
    float: left;
    width: 100%;
    height: 100%;
    padding-left: 100px; 
    /* background-color:rgb(173, 206, 128); */
}
#main #essay #inner #pic a{
    text-decoration: none;
}
#main #essay ul{
    width: 100%;
    float: left;
    background: linear-gradient(45deg, rgb(160, 191, 124), rgb(255, 255, 255)) fixed;
}
#main #essay ul li:first-child {
    float: left;
    width: 50px;
    height: 50px;
    line-height: 50px;
    background-color: yellow;
    border-radius: 50%;
    margin: 5px 20px;
}
#main #essay ul li{
    float: left;
    margin: 20px;
    width: 30%;
    height: 20px;
    line-height: 20px;
}
#main #essay ul li:last-child{
    float: right;
    padding-left: 20%;
}
#main #essay #pic img{
    width: 200px;
    height: 200px;
    margin:10px 10px;
}